Reshopper aims to make it easier to buy and sell unwanted kids' items in their local area

Clothes they've outgrown, or old toys they no longer play with are typical examples of the items sold on the app - and best of all, it's much cheaper than buying brand new.

The app was first launched by a group of dads in Denmark back in 2012 and it has gone from strength to strength.

According to their own figures, more than HALF of Danish households with kids under 6 use the app each month, while they claim the average parent will make around £315 a year by selling their kids' unwanted toys and clothes.

Overall, one million items were sold in Denmark, Sweden and the Netherlands in 2017 using the app.

CEO, and former Airbnb chief, Aja Henderson, said: "Reshoppper helps families and the environment in Denmark and it should have the same affect everywhere."